gnu: Fix typoes in package descriptions.

* gnu/packages/audio.scm (caps-plugins-lv2)[synopsis]: Fix typo.
* gnu/packages/bioconductor.scm (r-karyoploter, r-anota, r-gcrma)
(r-bigmemoryextras)[description]: Likewise.
* gnu/packages/cran.scm (r-geometry)[synopsis]: Likewise.
(r-stringdist, r-patchwork, r-depth, r-tea)[description]: Likewise.
* gnu/packages/crates-io.scm (rust-assert-fs-0.11, rust-notify-4)
(rust-tokio-fs-0.1)[synopsis, description]: Likewise.
(rust-blas-sys-0.7)[description]: Likewise.
(rust-fs-extra-1.1, rust-xattr-0.2)[synopsis]: Likewise.
* gnu/packages/databases.scm (perl-mysql-config)[description]: Likewise.
* gnu/packages/disk.scm (hddtemp)[description]: Likewise.
* gnu/packages/django.scm (python-djangorestframework)[description]:
Likewise.
* gnu/packages/documentation.scm (doc++)[description]: Likewise.
* gnu/packages/emacs-xyz.scm (emacs-kakoune, emacs-pyim-basedict, eless)
(emacs-scpaste)[description]: Likewise.
* gnu/packages/file-systems.scm (dbxfs)[description]: Likewise.
* gnu/packages/finance.scm (python-stdnum)[description]: Likewise.
* gnu/packages/fontutils.scm (woff2)[description]: Likewise.
* gnu/packages/games.scm (openttd-opengfx)[description]: Likewise.
* gnu/packages/gnome-xyz.scm (gnome-shell-extension-topicons-redux)
[description]: Likewise.
* gnu/packages/gnome.scm (libgrss)[description]: Likewise.
* gnu/packages/golang.scm (go-github-com-mitchellh-reflectwalk)
[description]: Likewise.
(go-github-com-go-git-go-billy)[synopsis, description]: Likewise.
* gnu/packages/haskell-check.scm (ghc-inspection-testing)[description]:
Likewise.
* gnu/packages/haskell-web.scm (ghc-yesod-form)[description]: Likewise.
* gnu/packages/haskell-xyz.scm (ghc-hex)[description]: Likewise.
* gnu/packages/hyperledger.scm (hyperledger-iroha-ed25519)[description]:
Likewise.
* gnu/packages/java.scm (java-mail)[synopsis]: Likewise.
(java-native-access-platform)[description]: Likewise.
* gnu/packages/kde-frameworks.scm (kactivities-stats)[description]:
Likewise.
* gnu/packages/kde-utils.scm (krusader)[description]: Likewise.
* gnu/packages/language.scm (praat)[description]: Likewise.
* gnu/packages/linux.scm (light)[description]: Likewise.
* gnu/packages/lisp-xyz.scm (sbcl-hu.dwim.defclass-star)[description]:
Likewise.
* gnu/packages/mail.scm (dovecot-trees, sieve-connect)[description]:
Likewise.
* gnu/packages/ocaml.scm (ocaml-opam-file-format, ocaml-cppo)
(ocaml4.07-ppx-variants-conv)[description]: Likewise.
* gnu/packages/perl.scm (perl-convert-binhex)[description]: Likewise.
* gnu/packages/python-crypto.scm (python-ecdsa)[description]: Likewise.
* gnu/packages/python-web.scm (python-html5lib)[synopsis, description]:
Likewise.
(python-venusian)[synopsis]: Likewise.
* gnu/packages/python-xyz.scm (python-readlike, python-gssapi)
(python-flufl-i18n)[description]: Likewise.
(python-pox, python-watchdog, python-xattr)[synopsis, description]:
Likewise.
* gnu/packages/ruby.scm (ruby-sorcerer)[description]: Likewise.
* gnu/packages/rust-apps.scm (watchexec)[description]: Likewise.
* gnu/packages/rust.scm (mrustc)[synopsis]: Likewise.
* gnu/packages/shells.scm (s-shell)[description]: Likewise.
* gnu/packages/ssh.scm (sshpass)[description]: Likewise.
* gnu/packages/terminals.scm (beep)[description]: Likewise.
* gnu/packages/web.scm (perl-lwp-useragent-cached)[description]:
Likewise.
* gnu/packages/wv.scm (wv)[description]: Likewise.

gnu/packages/golang.scm

@@ -2822,7 +2822,7 @@ cross-compilation.")
     (synopsis "Walk a value in Go using reflection")
     (description "reflectwalk is a Go library for \"walking\" a value in Go
 using reflection, in the same way a directory tree can be \"walked\" on the
-filesystem.  Walking a complex structure can allow you to do manipulations on
+file system.  Walking a complex structure can allow you to do manipulations on
 unknown structures such as those decoded from JSON.")
     (license license:expat)))
 
@@ -5237,11 +5237,11 @@ errors (warnings).")
     (native-inputs
      `(("go-gopkg-in-check-v1" ,go-gopkg-in-check-v1)))
     (home-page "https://github.com/go-git/go-billy/")
-    (synopsis "Filesystem abstraction for Go")
-    (description "Billy implements an interface based on the os standard
-library, allowing to develop applications without dependency on the underlying
-storage.  Makes it virtually free to implement mocks and testing over
-filesystem operations.")
+    (synopsis "File system abstraction for Go")
+    (description "Billy implements an interface based on the OS's standard
+library to develop applications without depending on the underlying storage.
+This makes it virtually free to implement mocks and testing over
+file system operations.")
     (license license:asl2.0)))
 
 (define-public go-github-com-jbenet-go-context